[PATCH v2 21/25] powerpc: add inline functions for cache related instructions
Christophe Leroy
christophe.leroy at c-s.fr
Wed Sep 23 02:51:11 AEST 2015
This patch adds inline functions to use dcbz, dcbi, dcbf, dcbst
from C functions
Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>
---
New in v2
arch/powerpc/include/asm/cache.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h
index 0dc42c5..a2de4f0 100644
--- a/arch/powerpc/include/asm/cache.h
+++ b/arch/powerpc/include/asm/cache.h
@@ -76,6 +76,25 @@ extern void _set_L3CR(unsigned long);
#define _set_L3CR(val) do { } while(0)
#endif
+static inline void dcbz(void *addr)
+{
+ __asm__ __volatile__ ("dcbz 0, %0" : : "r"(addr) : "memory");
+}
+
+static inline void dcbi(void *addr)
+{
+ __asm__ __volatile__ ("dcbi 0, %0" : : "r"(addr) : "memory");
+}
+
+static inline void dcbf(void *addr)
+{
+ __asm__ __volatile__ ("dcbf 0, %0" : : "r"(addr) : "memory");
+}
+
+static inline void dcbst(void *addr)
+{
+ __asm__ __volatile__ ("dcbst 0, %0" : : "r"(addr) : "memory");
+}
#endif /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_CACHE_H */
--
2.1.0
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